You aren't clear as to if the MD you saw is your Family Md or not, but he/she has given the rash some treatment and you still have it. You don't say what kinds of labs were drawn, but did say nothing came back, which I guess means that they were negative. It is right for you to not put any makeup on until you know what is causing the rash. If it was my skin, I'd be seeing a Dermatology MD as they are trained in this specialty.
Thanks for your help. I have been reffered to see a specialist although i have to wait 3 months which is a bit upsetting.
It can be due to seborrheic dermatitis. Seborrheic dermatitis is a common skin condition that causes flaky, dry, white to yellowish scales to form on oily areas esp under the nose or anywhere on face. Topical antifungals and mild steroids are the usual treatment and combination of the two can be used to treat stubborn patches. Oral antifungal drugs and immunomodulators such as tacrolimus and pimecrolimus are used in very severe cases. The other possibilities are of eczema, lupus erythematosus or dermatitis. Best would be to consult a dermatologist and get biopsy skin done to confirm the diagnosis.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your dermatologist. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.